Heavyweights who were never the lineal champion but were the best on the planet
Who are the heavyweights who were never the lineal champion, but were the best on the planet at one point?
How many have there been and how distinguished is the list?
For my money the clear cut examples are:
Klitschko Snr and Klitschko Jr depending upon whether their title claims are recognised.
In addition I would suggest that:
Ken Norton was probably the best heavyweight on the planet in the twilight years of Muhamad Ali's title reign.
One or more of the contenders of the 80s was the best fighter on the planet late in the title reign of Larry Holmes.
Anything that I should add?